"A snippet of code in the Steam digital distribution platform has revealed that Valve may be planning to let users easily share their games with friends in the future. The Verge has verified the code's authenticity, which was originally spotted by a member of the NeoGAF gaming forum; the code references a 'shared game library' and a notification that would alert a user when their games are currently in use by a borrower." This would change the, uh, game.

They're all Indies or oldies, ie. the only things worth owning these days!

FTFY

Seriously, though, the only non-GOG.com AAA games that I wish I could own are Portal and Portal 2... and I have no problem finding a Steam-using friend who bought Portal 2 so I can play through the story once at their place. (Same thing I did with Portal.)